Symfony 中的 Api 分页

Question

我正在研究 API，我有一个控制器可以查询 framework7 应用程序的结果。 （第一个，最后一个和两者）。但是，我想从 API 向框架添加分页，但我之前没有在 Symfony 中分页，最佳做法是什么？

我尝试了 paginator，但没有太多示例。下面是我的控制器功能。

 public function getEventSessionAttendeeAction(request $request, $eventSessionId)
{
    $searchFields = [
        'o.email',
        'a.email',
        'a.firstName',
        'a.lastName',
        'a.barcode1',
        'a.barcode2',
        'a.id',
        'o.id'
    ];

    /** @var \KCM\ApiBundle\Entity\Api\EventSession $eventSession */
    $eventSession = $this->get('doctrine')->getRepository('KCMApiBundle:EventSession')->findOneBy(
        [
            'id' => $eventSessionId
        ]
    );
    /** @var ApiEntity\Event $event */
    $event = $eventSession->getEvent();
    $childSafe = $event->getChildSafe();

    $filter = $request->get('filter');
    $match_level = 0;

    //Searches by email address
   if ( filter_var($filter, FILTER_VALIDATE_EMAIL)) {
    $searchFields = [
        'a.email'
    ];
    $match_level = 1;

    //Searches for first or last name
    }elseif(preg_match('/^[a-zA-Z\-]*$/', $filter)){
      $searchFields = [
         'a.lastName',
         'a.firstName'
     ];
      $match_level = 2;

    //Searches by barcode
   }elseif (preg_match('/^[0-9]+/', $filter)){

       if ($childSafe == 2) {
           $searchFields = [
               'a.barcode3'
           ];
       } else {
           $searchFields = [
               'a.barcode1'
           ];
       }
       $match_level = 4;
   }

    //Searches for first and last name(must have at least first characters for each
  if(preg_match('/^([a-z|A-Z]+)\s{1}([a-z|A-Z]+)/', $filter)){
       $match_level = 3;
   }elseif (preg_match('/^\s*$/', $filter)){
        $match_level = 5;
  }

    try {
      /** @var ApiEntity\EventSession $eventSession */

        $em = $this->getDoctrine()->getManager();
        $qb = $em->createQueryBuilder();
        $qb->select(array('a', 'o'))
            ->from('KCMApiBundle:EventAttendee', 'a')
            ->join('a.eventOrder', 'o')
            ->join('o.event', 'e')
            ->join('e.eventSessions', 'es')
            ->where($qb->expr()->andX(
               $qb->expr()->eq('es.id', $qb->expr()->literal($eventSessionId))
           ))
            ->andWhere('a.sessionCheckedIn = 1');

        if ($match_level === 3){
            $expr = $qb->expr()->andX();
            list($first, $last) = explode(' ', $filter);
                $last =  $last. '%';
                $expr->add($qb->expr()->like('a.lastName', $qb->expr()->literal($last)));
                $first =  $first. '%';
                $expr->add($qb->expr()->like('a.firstName',$qb->expr()->literal($first)));

        }elseif ($match_level === 5){
            $expr = $qb->expr()->andX();

            $paginator = new Paginator($qb);
            $paginator->getQuery()
                ->setFirstResult(0)
                ->setMaxResults(10);

        }else {
            $expr = $qb->expr()->orX();
            foreach ($searchFields as $field) {

                if ($match_level === 1) {
                    $literalFilter = $filter;
                    $expr->add($qb->expr()->like($field, $qb->expr()->literal($literalFilter)));
                } elseif ($match_level === 2) {
                    $literalFilter = $filter;
                    $expr->add($qb->expr()->like($field, $qb->expr()->literal($literalFilter)));
                } elseif ($match_level === 4) {
                    $literalFilter = $filter;
                    $expr->add($qb->expr()->eq($field, $qb->expr()->literal($literalFilter)));
                }
            }
        }

       $qb->andWhere($expr);
       $results = $qb->getQuery()->getResult();


        if ($results) {
            return $this->getApi()->serialize($results);
        }

        return new Response(null, Response::HTTP_NOT_FOUND);

    } catch (\Exception $e) {
        $this->get('logger')->error($e->getMessage());
    }
}

我最终想要做的是能够使用这个查询来分页到 framework7 应用程序。我应该创建一个新的公共函数来分页还是有办法在这个函数中做到这一点？

Answer 1

您是否尝试使用 knppagination 捆绑包？

https://github.com/KnpLabs/KnpPaginatorBundle